/* ===== BASE & SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #0a0f1a; }
::-webkit-scrollbar-thumb { background: #0d9488; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #14b8a6; }

/* ===== GRADIENT TEXT ===== */
.gradient-text {
    background: linear-gradient(135deg, #2dd4bf, #0d9488);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== GLOW ===== */
.glow {
    box-shadow: 0 0 30px rgba(13, 148, 136, 0.15);
}
.glow-strong {
    box-shadow: 0 0 60px rgba(13, 148, 136, 0.25);
}

/* ===== CARDS ===== */
.service-card {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(13, 148, 136, 0.2);
    border-color: rgba(13, 148, 136, 0.5);
}

.project-card {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(13, 148, 136, 0.15);
}

/* ===== ANIMATED GRADIENT BORDER ===== */
.gradient-border {
    position: relative;
}
.gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, #2dd4bf, #0d9488, #2dd4bf);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
}
@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* ===== FADE-UP ANIMATION ===== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== NAVBAR ===== */
.nav-scrolled {
    background: rgba(10, 15, 26, 0.95) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(13, 148, 136, 0.1);
}

.nav-link {
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #2dd4bf, #0d9488);
    transition: width 0.3s ease;
}
.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* ===== HERO PARTICLES ===== */
.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(13, 148, 136, 0.3);
    animation: float linear infinite;
}
@keyframes float {
    0% { transform: translateY(0) rotate(0deg); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-100vh) rotate(720deg); opacity: 0; }
}

/* ===== PULSE CTA ===== */
.pulse-ring {
    animation: pulseRing 2s ease-out infinite;
}
@keyframes pulseRing {
    0% { box-shadow: 0 0 0 0 rgba(13, 148, 136, 0.4); }
    100% { box-shadow: 0 0 0 20px rgba(13, 148, 136, 0); }
}

/* ===== TYPING CURSOR ===== */
.typing-cursor {
    display: inline-block;
    width: 3px;
    height: 1em;
    background: #14b8a6;
    margin-left: 2px;
    animation: blink 1s step-end infinite;
    vertical-align: text-bottom;
}
@keyframes blink {
    50% { opacity: 0; }
}

/* ===== STAT COUNTER ===== */
.stat-number {
    font-variant-numeric: tabular-nums;
}

/* ===== GRID PATTERN BG ===== */
.grid-pattern {
    background-image:
        linear-gradient(rgba(13, 148, 136, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(13, 148, 136, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

/* ===== MOBILE MENU ===== */
.mobile-menu {
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.mobile-menu.open {
    transform: translateX(0);
}

/* ===== FORM FOCUS ===== */
input:focus, textarea:focus {
    outline: none;
    border-color: #0d9488 !important;
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

/* ===== PAGE HEADER (inner pages) ===== */
.page-header {
    background: linear-gradient(180deg, rgba(13, 148, 136, 0.05) 0%, transparent 100%);
}

/* ===== TR ANIMATED LETTERS ===== */

/* Breathing / floating base animation */
.tr-letter {
    transition: transform 0.15s ease-out;
}

/* Idle breathing */
#tr-letter-t.tr-idle {
    animation: trBreathT 4s ease-in-out infinite;
}
#tr-letter-r.tr-idle {
    animation: trBreathR 4s ease-in-out infinite;
}

@keyframes trBreathT {
    0%, 100% { transform: translateX(-50%) translateY(0) rotate(0deg); }
    25% { transform: translateX(-50%) translateY(-6px) rotate(-1deg); }
    50% { transform: translateX(-50%) translateY(2px) rotate(0.5deg); }
    75% { transform: translateX(-50%) translateY(-3px) rotate(-0.5deg); }
}
@keyframes trBreathR {
    0%, 100% { transform: translateX(-25%) translateY(0) rotate(0deg); }
    25% { transform: translateX(-25%) translateY(-6px) rotate(-1deg); }
    50% { transform: translateX(-25%) translateY(2px) rotate(0.5deg); }
    75% { transform: translateX(-25%) translateY(-3px) rotate(-0.5deg); }
}

/* Walk entrance — T from left, R from right, step-bounce to meet */
#tr-letter-t.tr-walk {
    animation: trWalkT 2.8s cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
}
#tr-letter-r.tr-walk {
    animation: trWalkR 2.8s cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
}

@keyframes trWalkT {
    0%   { transform: translateX(-50%) translateX(-280px); opacity: 0; }
    8%   { opacity: 1; }
    12%  { transform: translateX(-50%) translateX(-220px) translateY(-12px) rotate(-3deg); }
    18%  { transform: translateX(-50%) translateX(-180px) translateY(0) rotate(0deg); }
    26%  { transform: translateX(-50%) translateX(-135px) translateY(-12px) rotate(-3deg); }
    32%  { transform: translateX(-50%) translateX(-100px) translateY(0) rotate(0deg); }
    40%  { transform: translateX(-50%) translateX(-65px) translateY(-10px) rotate(-2.5deg); }
    46%  { transform: translateX(-50%) translateX(-38px) translateY(0) rotate(0deg); }
    54%  { transform: translateX(-50%) translateX(-16px) translateY(-8px) rotate(-1.5deg); }
    62%  { transform: translateX(-50%) translateX(-4px) translateY(0) rotate(0deg); }
    75%  { transform: translateX(-50%) translateX(2px) translateY(-3px) rotate(-0.5deg); }
    88%  { transform: translateX(-50%) translateY(0) rotate(0deg); }
    100% { transform: translateX(-50%) translateY(0) rotate(0deg); opacity: 1; }
}
@keyframes trWalkR {
    0%   { transform: translateX(-25%) translateX(280px); opacity: 0; }
    8%   { opacity: 1; }
    12%  { transform: translateX(-25%) translateX(220px) translateY(-12px) rotate(3deg); }
    18%  { transform: translateX(-25%) translateX(180px) translateY(0) rotate(0deg); }
    26%  { transform: translateX(-25%) translateX(135px) translateY(-12px) rotate(3deg); }
    32%  { transform: translateX(-25%) translateX(100px) translateY(0) rotate(0deg); }
    40%  { transform: translateX(-25%) translateX(65px) translateY(-10px) rotate(2.5deg); }
    46%  { transform: translateX(-25%) translateX(38px) translateY(0) rotate(0deg); }
    54%  { transform: translateX(-25%) translateX(16px) translateY(-8px) rotate(1.5deg); }
    62%  { transform: translateX(-25%) translateX(4px) translateY(0) rotate(0deg); }
    75%  { transform: translateX(-25%) translateX(-2px) translateY(-3px) rotate(0.5deg); }
    88%  { transform: translateX(-25%) translateY(0) rotate(0deg); }
    100% { transform: translateX(-25%) translateY(0) rotate(0deg); opacity: 1; }
}

/* INTERACTIVE label fade in */
#tr-label {
    opacity: 0;
    transition: opacity 0.8s ease;
}
#tr-label.tr-visible {
    opacity: 1;
}

/* Floating particles around TR */
.tr-particle {
    animation: trParticleFloat 6s ease-in-out infinite;
    opacity: 0;
}
.tr-particle:nth-child(1) { animation-delay: 0s; }
.tr-particle:nth-child(2) { animation-delay: 1s; }
.tr-particle:nth-child(3) { animation-delay: 2s; }
.tr-particle:nth-child(4) { animation-delay: 3s; }
.tr-particle:nth-child(5) { animation-delay: 4s; }
.tr-particle:nth-child(6) { animation-delay: 5s; }

.tr-particle.tr-particles-go {
    opacity: 1;
}

@keyframes trParticleFloat {
    0%, 100% { transform: translateY(0) translateX(0); opacity: 0.3; }
    25% { transform: translateY(-8px) translateX(4px); opacity: 0.7; }
    50% { transform: translateY(-2px) translateX(-3px); opacity: 0.5; }
    75% { transform: translateY(-10px) translateX(2px); opacity: 0.8; }
}

/* Glow orbs pulse */
.tr-glow-orb {
    animation: trGlowPulse 5s ease-in-out infinite;
}
.tr-glow-orb:nth-child(2) {
    animation-delay: 2.5s;
}

@keyframes trGlowPulse {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.15); }
}